LIGHT EMITTING DIODE SOURCE WITH PROTECTIVE BARRIER

• US 20100142180A1
• Filed: 03/24/2009
• Published: 06/10/2010
• Est. Priority Date: 03/24/2009
• Status: Active Grant

• Current Assignee: Bridgelux Incorporated
• Original Assignee: Bridgelux Incorporated
• Inventors: POSSELT, Jason
• Granted Patent: US 8,084,777 B2
• Time in Patent Office: Days
• US Class Current: 362/84
• CPC Class Codes: F21K 9/00 Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
• CPC Class Codes: F21S 41/151 arranged in one or more lines
• CPC Class Codes: F21V 31/04 Provision of filling media
• CPC Class Codes: F21W 2131/10 Outdoor lighting
• CPC Class Codes: F21W 2131/305 for refrigerators
• CPC Class Codes: F21Y 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/48137 the bodies being arranged next to each other, e.g. on a common substrate
• CPC Class Codes: H01L 2924/00012 Relevant to the scope of the group, the symbol of which is combined with the symbol of this group
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 2924/181 Encapsulation
• CPC Class Codes: H05K 2201/10106 Light emitting diode [LED]
• CPC Class Codes: H05K 2201/10189 Non-printed connector
• CPC Class Codes: H05K 2201/2018 Presence of a frame in a printed circuit or printed circuit assembly
• CPC Class Codes: H05K 3/284 for encapsulating mounted components H05K1/185 takes precedence

Abstract

An apparatus having a substrate, an LED light source attached to the substrate, an electrical connector attached to the substrate and electrically connected to the LED light source, a potting material on the substrate and covering at least a portion of the electrical connector; and a barrier separating the potting material from the LED light source, the barrier having a height that exceeds the thickness of the potting material on the substrate.

Claims

1. An apparatus, comprising:

a substrate;

an LED light source attached to the substrate;

an electrical connector attached to the substrate and electrically connected to the LED light source;

a potting material on the substrate and covering at least a portion of the electrical connector; and

a barrier separating the potting material from the LED light source, the barrier having a height that exceeds the thickness of the potting material on the substrate.

2. The apparatus of claim 1 wherein the LED light source comprises an LED array.

3. The apparatus of claim 1 wherein the LED light source comprises at least one LED encapsulated with an encapsulation material.

4. The apparatus of claim 3 wherein the height of the barrier exceeds the thickness of the encapsulation material.

5. The apparatus of claim 3 wherein each of said at least one LED comprises a blue LED and the encapsulation material includes phosphor.

8. The apparatus of claim 1 wherein the barrier comprises a tapered rim that extends over the potting material.

9. The apparatus of claim 1 wherein the barrier includes a reflective surface arranged to reflect light emitted from the LED light source.

6. (canceled)

7. (canceled)

10. (canceled)

11. An apparatus, comprising:

a substrate;

an LED light source attached to the substrate;

a barrier surrounding at least a portion of the LED light source;

an electrical connector attached to the substrate and electrically connected to the LED light source;

the electrical connector being on the opposite side of the barrier from the LED light source; and

a potting material on the substrate and covering at least a portion of the electrical connector;

wherein the barrier has a height that exceeds the thickness of the potting on the substrate.

12. The apparatus of claim 11 wherein the LED light source comprises an LED array.

13. The apparatus of claim 11 wherein the LED light source comprises at least one LED encapsulated with an encapsulation material.

14. The apparatus of claim 13 wherein the height of the barrier exceeds the thickness of the encapsulation material.

15. The apparatus of claim 13 wherein each of said at least one LED comprises a blue LED and the encapsulation material includes phosphor.

18. The apparatus of claim 11 wherein the barrier comprises a tapered rim that extends over the potting material.

19. The apparatus of claim 11 wherein the barrier includes a reflective surface arranged to reflect light emitted from the LED light source.

16. (canceled)

17. (canceled)

20. (canceled)

21. An apparatus, comprising:

a substrate;

an LED light source attached to the substrate;

an electrical connector attached to the substrate and electrically connected to the LED light source;

a potting material on the substrate and covering at least a portion of the electrical connector; and

a barrier between the LED light source and the electrical connector, the barrier having a height that exceeds the thickness of the potting material on the substrate.

22. The apparatus of claim 21 wherein the LED light source comprises an LED array.

23. The apparatus of claim 21 wherein the LED light source comprises at least one LED encapsulated in an encapsulation material.

24. The apparatus of claim 23 wherein the height of the barrier exceeds the thickness of the encapsulation material.

25. The apparatus of claim 23 wherein each of said at least one LED comprises a blue LED and the encapsulation material includes phosphor.

29. The apparatus of claim 21 wherein the barrier includes a reflective surface arranged to reflect light emitted from the LED light source.

26-28. -28. (canceled)

30-31. -31. (canceled)